Title :
Demonstration of an observation tool to evaluate the performance of ICA technique
Author :
Nair, Kavitha N. ; Unnikrishnan, A. ; Lethakumary, B.
Author_Institution :
Dept. of Electron. & Commun., Mahatma Gandhi Univ., Thodupuzha, India
Abstract :
The motivation behind the Blind source separation is to separate the mixed sources, in particular for the blind case where both the sources and mixing process are unknown and if desirable to recover all the sources from the mixtures,. The paper reveals the blind source separation techniques, the mixing environment probably occurs with signals. The present work compares the performance of the Principal Component Analysis (PCA) technique and Independent component analysis (ICA). The demixing process used is based on the maximization of Kurtosis. The extent of demixing is assessed from the strength of the scaled version of off diagonal elements in the correlation matrix of demixed output. The Matlab simulation supplemented by plots, scatter, and bar diagrams between signal separated brings out effectively the superiority in the performance of the maximization of Kurtosis for source separation.
Keywords :
blind source separation; correlation theory; independent component analysis; mixing; optimisation; principal component analysis; ICA technique; Kurtosis maximization; Matlab simulation; PCA technique; bar diagram; blind source separation technique; demixed output correlation matrix; demixing process; independent component analysis technique; mixed source separation; mixing process; observation tool demonstration; principal component analysis technique; signal separation; Blind source separation; Correlation; Covariance matrix; Educational institutions; Independent component analysis; Principal component analysis; Vectors; Blind source separation; Maximizing non Gaussian using kurtosis and Independent component analysis using Fast ICA algorithm; Principal component analysis Second order; The effectiveness of the demixing process; higher order methods;
Conference_Titel :
Power, Signals, Controls and Computation (EPSCICON), 2012 International Conference on
Conference_Location :
Thrissur, Kerala
Print_ISBN :
978-1-4673-0446-7
DOI :
10.1109/EPSCICON.2012.6175248